Generation of Ultraviolet and Vacuum Ultraviolet Radiation
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The paper describes the use of nonlinear optical techniques for the generation of coherent radiation at ultraviolet, vacuum ultraviolet, and soft x-ray wavelengths. Mixtures of metal vapors and inert gases, and other mixed gas systems, allow generation to regions of the spectrum where nonlinear optical crystals are opaque; and also allow generation at high incident power and energy densities. Progress is reported on programs aimed at efficient conversion from 1.064µ to 3547 Å, and from 3547 Å to 1182 Å. To date, the shortest wavelength generated by this technique is 887 Å. Theoretical considerations indicate that generation into the soft x-ray region should be possible. Using 1182 Å radiation, a holographic grating with a fringe spacing of 836 Å has been constructed and examined on an electron microscope.
KeywordsHeat Pipe Coherence Length Dispersive Medium Metal Vapor High Order Harmonic Generation
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- 15.J. W. Goodman, private communication.Google Scholar